Examples:
cartography
card
archaeology
archetype
monarchy
legal
loyal
purse
personal
cinema
kinase
car
carpenter
hippopotamus
Mesopotamia
dative
data
date
...
Old Irish
srón
←
Proto-Celtic
*srognā
(inherited)
←
Welsh
ffroen
(cognate)
→
Breton
fri
(cognate)
→
Irish
srón
(inherited)
→
Scottish Gaelic
sròn
(inherited)
→
Manx
stroin
(mention)
→
Old Irish
srónmar
(suffix)